[PATCH AUTOSEL for 4.9 073/281] net/wan/fsl_ucc_hdlc: fix unitialized variable warnings

From: Sasha Levin
Date: Mon Mar 19 2018 - 17:29:51 EST


From: Holger Brunck <holger.brunck@xxxxxxxxxxx>

[ Upstream commit 66bb144bd9096dd5268ef736ba769b8b6f4ef100 ]

This fixes the following compiler warnings:
drivers/net/wan/fsl_ucc_hdlc.c: In function 'ucc_hdlc_poll':
warning: 'skb' may be used uninitialized in this function
[-Wmaybe-uninitialized]
skb->mac_header = skb->data - skb->head;

and

drivers/net/wan/fsl_ucc_hdlc.c: In function 'ucc_hdlc_probe':
drivers/net/wan/fsl_ucc_hdlc.c:1127:3: warning: 'utdm' may be used
uninitialized in this function [-Wmaybe-uninitialized]
kfree(utdm);

Signed-off-by: Holger Brunck <holger.brunck@xxxxxxxxxxx>
Cc: Zhao Qiang <qiang.zhao@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
drivers/net/wan/fsl_ucc_hdlc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c
index 65647533b401..4c49410c3a1b 100644
--- a/drivers/net/wan/fsl_ucc_hdlc.c
+++ b/drivers/net/wan/fsl_ucc_hdlc.c
@@ -454,7 +454,7 @@ static int hdlc_tx_done(struct ucc_hdlc_private *priv)
static int hdlc_rx_done(struct ucc_hdlc_private *priv, int rx_work_limit)
{
struct net_device *dev = priv->ndev;
- struct sk_buff *skb;
+ struct sk_buff *skb = NULL;
hdlc_device *hdlc = dev_to_hdlc(dev);
struct qe_bd *bd;
u32 bd_status;
@@ -1002,7 +1002,7 @@ static int ucc_hdlc_probe(struct platform_device *pdev)
struct device_node *np = pdev->dev.of_node;
struct ucc_hdlc_private *uhdlc_priv = NULL;
struct ucc_tdm_info *ut_info;
- struct ucc_tdm *utdm;
+ struct ucc_tdm *utdm = NULL;
struct resource res;
struct net_device *dev;
hdlc_device *hdlc;
--
2.14.1